> In the end I concluded that the BT878 was inadequate for this purpose;
> it isn't designed for it and so the FIFO is too small. It's provisioned
> for audio data at up to a megabit, not ATSC/DVB data at 20 Mbit or
> above.
I second this analysis. The megablocks patch I wrote for the HD-2000
driver solves interrupt latency issues, but not bus latency issues,
and I don't believe the bus latency issues *can* be solved with the
existing hardware FIFO.
Cheers,
Kyle